On 13/06/2019 11:10, Marc Gonzalez wrote:
> Here are my observations for a 8998 board:
>
> 1) If I apply only the readl_poll_timeout() fix (not the mask_pcs_ready fixup)
> qcom_pcie_probe() fails with a timeout in phy_init.
> => this is in line with your regression analysis.
>
> 2) Your patch also fixes a long-standing bug in UFS init whereby sending
> lots of information to the console during phy init would lead to an
> incorrectly diagnosed time-out.
>
> Good stuff!
>
> Reviewed-by: Marc Gonzalez <[email protected]>
> Tested-by: Marc Gonzalez <[email protected]>
It looks like this patch fixed UFS, but broke PCIe and USB3 ^_^
qcom-qmp-phy 1c06000.phy: Registered Qcom-QMP phy
qcom-qmp-phy c010000.phy: Registered Qcom-QMP phy
qcom-qmp-phy 1da7000.phy: Registered Qcom-QMP phy
qcom-qmp-phy 1c06000.phy: BEFORE=000000a6 AFTER=000000a6
qcom-qmp-phy 1c06000.phy: phy initialization timed-out
phy phy-1c06000.phy.0: phy init failed --> -110
qcom-pcie: probe of 1c00000.pci failed with error -110
qcom-qmp-phy 1da7000.phy: BEFORE=00000040 AFTER=0000000d
qcom-qmp-phy c010000.phy: BEFORE=69696969 AFTER=b7b7b7b7
qcom-qmp-phy c010000.phy: phy initialization timed-out
phy phy-c010000.phy.1: phy init failed --> -110
dwc3 a800000.dwc3: failed to initialize core: -110
dwc3: probe of a800000.dwc3 failed with error -110
Downstream code for PCIe is:
static bool pcie_phy_is_ready(struct msm_pcie_dev_t *dev)
{
if (dev->phy_ver >= 0x20) {
if (readl_relaxed(dev->phy + PCIE_N_PCS_STATUS(dev->rc_idx,
dev->common_phy)) & BIT(6))
return false;
else
return true;
}
if (!(readl_relaxed(dev->phy + PCIE_COM_PCS_READY_STATUS) & 0x1))
return false;
else
return true;
}
AFAICT:
PCIe and USB3 QMP PHYs are ready when PHYSTATUS=BIT(6) goes to 0.
But UFS is ready when PCS_READY=BIT(0) goes to 1.
Can someone verify that USB3 is broken on 845 with 885bd765963b?
Regards.
